Football helmet



FIG. 1 is a right-perspective view of a football helmet showing my new design;

FIG. 2 is a left-perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a football helmet, as shown and described. 